EP0386510A1 - Dispositif filtrant pourvu d'un système rotatif - Google Patents

Dispositif filtrant pourvu d'un système rotatif Download PDF

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Publication number
EP0386510A1
EP0386510A1 EP90103099A EP90103099A EP0386510A1 EP 0386510 A1 EP0386510 A1 EP 0386510A1 EP 90103099 A EP90103099 A EP 90103099A EP 90103099 A EP90103099 A EP 90103099A EP 0386510 A1 EP0386510 A1 EP 0386510A1
Authority
EP
European Patent Office
Prior art keywords
agitator
stirring blades
filter
filter cake
filter plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90103099A
Other languages
German (de)
English (en)
Other versions
EP0386510B1 (fr
Inventor
Hartmut Dr. Hetzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0386510A1 publication Critical patent/EP0386510A1/fr
Application granted granted Critical
Publication of EP0386510B1 publication Critical patent/EP0386510B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/075—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements located in a closed housing and comprising scrapers or agitators on the cake side of the filtering elements, e.g. Nutsche- or Rosenmund-type filters for performing multiple step operations such as chemical reactions, filtering and cake treatment

Definitions

  • the invention relates to a filter device with agitator, consisting of a horizontal filter plate with a central discharge opening and a stirrer shaft arranged perpendicularly and centrally to the filter plate, which carries two stirrer bar arms, with stirrer blades pointing to the stirrer bar arms facing the filter plate and being arranged at an angle to their circulation circuit .
  • Filter devices of this type also known as agitator filters, are used for the process steps filtering - washing (suspending) - drying - discharging.
  • the agitator is of crucial importance: After filtering, the task is to suspend the filter cake in the detergent for the washing process, to finely distribute the washed filter cake for drying and to ensure good material and heat exchange with the heated container wall and to discharge the solid as completely as possible from the suction filter. Especially stirring up the solid filter cake is problematic, since it provides the stirrer with a very high resistance.
  • Agitators are therefore used, e.g. ensure by means of an additional lifting movement that the stirring blades only gradually dip into the filter cake.
  • Such agitators are quite complex, and in particular the sealing of the agitator shaft is problematic.
  • the object is to improve the filter device mentioned at the outset in such a way that only a rotating seal is required for the agitator and the agitator blades only act gradually on the filter cake.
  • stirrer blades can be moved from the normal position having an angle to their circulating circuit into the position tangential to their circulating circuit by the resistance of the filter cake located on the filter plate.
  • this mobility is brought about by the fact that the agitator blades are pivotally mounted on the agitator bar and, in relation to the direction of rotation of the agitator, are under spring force in the same direction.
  • the agitator blades are made of wear-resistant, elastic material and are fixed in their normal position at an angle to their orbital circuit by means of bolts.
  • the filter device consists of a disk-like filter plate 1, which has a central discharge opening 2. Above this discharge opening 2 there is an agitator shaft 3 which carries two agitator arm 4. Bolts 5, on which stirring blades 6 are held, are arranged at these at regular intervals from the filter plate 1. The shorter ends of the agitator blades 6 of the agitator beam arms 4 are supported by means of pins 7 in a pull rod 8, which are fastened by means of a spring 9 to a crossbar 10 arranged on the agitator shaft 3. The springs 9 have a force which is less than that which the solid filter cake exerts on the stirring blades 6, but is greater than that of the well-loosened filter cake.
  • the filter device consists of a disk-shaped filter plate 21 which has a central discharge opening 22. Above this discharge opening 22 there is a stirring shaft 23 which carries two stirring bar arms 24. Bolts 25, on which stirrer blades 26 are held, are arranged at these at uniform intervals from the filter plate 21. These consist of spring steel or, for example, a polyur ethane elastomer, which is characterized by high wear resistance and corresponding elasticity. The deformability of the stirring blades 26 is such that it is greater than the force which the solid filter cake exerts on the stirring blades 26, but less than the resistance of the well-loosened filter cake.
  • the stirring blades 6 assume the normal position shown in FIG. 1 with the angle ⁇ to the circulating circuit. If the agitator now begins to work, with the direction of rotation to the left, the agitator blades 6 are pressed into the neutral position tangential to the circuit as shown in FIG. 2, because the force exerted by the fixed filter cake is greater than the spring force acting on the agitator blades 6 . With increasing loosening of the filter cake, its acting force decreases, so that finally the spring force predominates and the agitating blades 6 become active by taking up the position according to FIG. 1 again. The filter cake is conveyed to the outside. To discharge the filter cake mass, the direction of rotation is changed, the stirring blades 6 maintaining the position shown in FIG. 1; however, they convey inwards to the discharge opening 2.
  • the stirring blades 26 assume the normal position shown in FIG. 3 with the angle ⁇ to the circulating circuit. 4 begins, because the force exerted by the fixed filter cake is greater than the deformation resistance of the stirring blades 26. Mit increasing loosening of the filter cake decreases its acting force, so that finally the deformation resistance of the stirring blades 26 predominates and the stirring blades 26 become active by taking up the position according to FIG. 3 again.
  • the filter cake is pushed outwards.
  • the stirring blades 26 maintaining the position shown in FIG. 3; however, they convey inwards to the discharge opening 22, a change in the angle of attack ⁇ being prevented by a stop at the rear end of the blade.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Food-Manufacturing Devices (AREA)
  • Filtration Of Liquid (AREA)
EP90103099A 1989-03-04 1990-02-17 Dispositif filtrant pourvu d'un système rotatif Expired - Lifetime EP0386510B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3907040 1989-03-04
DE3907040A DE3907040C1 (fr) 1989-03-04 1989-03-04

Publications (2)

Publication Number Publication Date
EP0386510A1 true EP0386510A1 (fr) 1990-09-12
EP0386510B1 EP0386510B1 (fr) 1993-02-10

Family

ID=6375573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103099A Expired - Lifetime EP0386510B1 (fr) 1989-03-04 1990-02-17 Dispositif filtrant pourvu d'un système rotatif

Country Status (5)

Country Link
US (1) US4992171A (fr)
EP (1) EP0386510B1 (fr)
JP (1) JPH02277517A (fr)
DE (2) DE3907040C1 (fr)
ES (1) ES2038456T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2279904C2 (ru) * 2004-08-30 2006-07-20 Открытое акционерное общество "Муромский ремонтно-механический завод" Самоочищающийся фильтр
CN109502791A (zh) * 2018-12-28 2019-03-22 河南绿色九州环保科技股份有限公司 多级循环污水处理装置及污水处理方法
US11911719B2 (en) * 2019-09-20 2024-02-27 Massachusetts Institute Of Technology Devices and methods for the integrated filtration, drying, and mechanical processing of active pharmaceutical ingredients
CN111533314A (zh) * 2020-05-13 2020-08-14 李春珍 一种医用纱布脱脂污水处理装置
CN111589357A (zh) * 2020-05-21 2020-08-28 郑州方信新材料有限公司 一种高温涂料过滤搅拌机装置及其涂料输送方法
CN111916656B (zh) * 2020-07-21 2025-05-13 合肥通用机械研究院有限公司 一种用于三元材料的集成式生产系统
CN113262536B (zh) * 2021-05-19 2022-05-03 江苏世纪星新材料科技有限公司 一种节能环保的水性涂料智能制造装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238024A (en) * 1938-07-30 1941-04-08 Dorr Co Inc Combined clarifier and flocculating apparatus
GB771253A (en) * 1954-10-12 1957-03-27 Augustine Joseph Hartley Improvements in and relating to scrapers for sedimentation tanks
CH600928A5 (en) * 1977-01-04 1978-06-30 Vevey Atel Const Mec Pressure or vacuum filter with a paddle arm

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE220296C (fr) *
US684555A (en) * 1901-05-08 1901-10-15 Charles I Simpson Water-filter.
FR1064032A (fr) * 1952-10-02 1954-05-10 Asepta Procédé et installation d'épuration d'eaux
FR1356496A (fr) * 1963-03-14 1964-03-27 Filtre-presse comportant l'adaptation de mécanismes permettant l'évacuation des sédiments, une filtration continue, un débit régulier
JPS6458309A (en) * 1987-08-28 1989-03-06 Yagishita Goshi Kaisha Crossflow type filter
US4880539A (en) * 1987-10-16 1989-11-14 Cellier Corporation Filter for filtering solids out of a liquid having a doctor blade wiping means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238024A (en) * 1938-07-30 1941-04-08 Dorr Co Inc Combined clarifier and flocculating apparatus
GB771253A (en) * 1954-10-12 1957-03-27 Augustine Joseph Hartley Improvements in and relating to scrapers for sedimentation tanks
CH600928A5 (en) * 1977-01-04 1978-06-30 Vevey Atel Const Mec Pressure or vacuum filter with a paddle arm

Also Published As

Publication number Publication date
EP0386510B1 (fr) 1993-02-10
JPH02277517A (ja) 1990-11-14
DE3907040C1 (fr) 1990-08-02
US4992171A (en) 1991-02-12
DE59000860D1 (de) 1993-03-25
ES2038456T3 (es) 1993-07-16

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